private ObservableCollection <TreeViewItemSource> PrepareItemsSource(bool expandRootNode = false)
{
var root0 = new TreeViewItemSource()
{
Content = "Root.0"
};
var root1 = new TreeViewItemSource()
{
Content = "Root.1"
};
var root2 = new TreeViewItemSource()
{
Content = "Root.2"
};
var root = new TreeViewItemSource()
{
Content = "Root", Children = { root0, root1, root2 }, IsExpanded = expandRootNode
};
return(new ObservableCollection <TreeViewItemSource> {
root
});
}
private void SetupExpandingNodeEvent_Click(object sender, RoutedEventArgs e)
{
if (IsInContentMode())
{
TreeViewItemSource item = new TreeViewItemSource()
{
Content = "Virtualized", HasUnrealizedChildren = true
};
TestTreeViewItemsSource[0].Children.Add(item);
ContentModeTestTreeView.Expanding += ContentModeTestTreeView_Expanding;
}
else if (_visualRoot != null)
{
_virtualizedNode = new TreeViewNode()
{
Content = "Virtualized"
};
_virtualizedNode.HasUnrealizedChildren = true;
_visualRoot.Children.Add(_virtualizedNode);
TestTreeView.Expanding += TestTreeView_Expanding;
}
}
